Oki appears to be a proficient Sniper. Osamu listed him as one of the two most dangerous members of Ikoma Unit, together with his captain. He is confident enough in his own aim and reflexes to plan to shoot Chika the moment she opens fire, due to the durability of her Shield. Unlike other Snipers, he changes his position only when it is strictly necessary, partially due to his Grasshopper allowing him to retreat swiftly if an enemy gets too close. He has shown multiple times to fare particularly well against moving targets.
|Kōji Oki's Triggers|
|Border's Optional Trigger that renders the user invisible to Radar while activate. Oki first used it in Chapter 152.|
|Oki uses this Trigger to quickly leap tall buildings to reach his sniping position. It is also very useful to retreat or relocated once spotted, although it is not as effective in long-distance crossings. He first used it in Chapter 152.|
|As a member of a top tier unit, Oki is quite efficient in using Eaglet. With it, he was able to shoot off Yūma Kuga's arm while the latter was airborne from a fair distance, a feat not even some A-Rank agents can accomplish. He would also have taken out Chika Amatori while she was jumping off a building had it not been for her Shield. Oki first used Eaglet in Chapter 152.|
|As a member of a top tier unit, Oki is quite proficient with Lightning. He can use it to force other Snipers into hiding, preventing them from attacking with its high rate of fire. He first used it in Chapter 157.|